Underimmunized, unvaccinated families cluster together

January 19, 2015 2:37 PM

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Underimmunization is tied to an increased risk of vaccine-preventable diseases, the researchers write in the journal Pediatrics.

“We now have the opportunity to use really sophisticated methods to identify these kinds of clusters of undervaccination or vaccine refusal,” said Dr. Tracy Lieu, the study’s lead author from the Kaiser Permanente Division of Research in Oakland, California.